netdev - Re: [PATCH v4 bpf-next 1/4] bpf: switch bpf_map ref counter to 64bit so bpf_map

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Date:   Fri, 15 Nov 2019 21:47:56 +0000
From:   Song Liu <songliubraving@...com>
To:     Andrii Nakryiko <andriin@...com>
CC:     "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "andrii.nakryiko@...il.com" <andrii.nakryiko@...il.com>,
        Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH v4 bpf-next 1/4] bpf: switch bpf_map ref counter to 64bit
 so bpf_map_inc never fails



> On Nov 14, 2019, at 8:02 PM, Andrii Nakryiko <andriin@...com> wrote:
> 

[...] 

> 
> This patch, while modifying all users of bpf_map_inc, also cleans up its
> interface to match bpf_map_put with separate operations for bpf_map_inc and
> bpf_map_inc_with_uref (to match bpf_map_put and bpf_map_put_with_uref,
> respectively). Also, given there are no users of bpf_map_inc_not_zero
> specifying uref=true, remove uref flag and default to uref=false internally.
> 
> Signed-off-by: Andrii Nakryiko <andriin@...com>

Acked-by: Song Liu <songliubraving@...com>